public static function getLatestCommentByUserId($userId) { $status = new self(); $status->setProjection(array("comment")); $status->setCondition("user_id", $userId); $status->setOrderBy("created_at", "desc"); $status->setLimit(1); $statuses = $status->select(); return isset($statuses[0]) ? $statuses[0]->comment : ""; }